rtlwifi: rtl8192ee: Prevent log spamming for switch statements

The driver logs a message when the default branch of switch statements are
taken. Such information is useful when debugging, but these log items should
not be seen for standard usage.

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>